Heating-stove



(ModeL) J. KILSHAW.

HEATING STOVE.

No.2'73,106. Patented Peb.2'7, 1883.

I UNITED STATES PATENT OFFICE.

JOHN KILSHAW, OF ST. PAUL, MINNESOTA.

HEATING-STOVE.

SPECIFICATION forming part of Letters Patent No. 273,106, dated February27, 1883.

Application filed December 8, 1882. (Model.)

To all whom it may concern:

Be it known that I, JOHN KILSHAW, of St. Paul, in the county of Ramseyand State of Minnesota, have invented a' new and useful Improvement inHeating-Stoves, of which the following is a full, clear, and exactdescription.

The invention relates to the hollow side-perforated cone, which has beenused to admit air laterally to the center of fire and into thecombustion-chamber above the fire, so that a more perfect combustion maytake place in all parts of the fire. The air which is admitted has beenso warmed by its contact with the inner surface of the cone that it morereadily supports combustion in the gases and but little is carried up bythe draft before its oxygen has been utilized.

The object of my invention is to increase the heating-surface whichcomes in contact with the fire and that which contacts with and suppliesheat to the air as it ascends on the inside of the cone.

Reference is to be had to the accompanying drawings, forming part ofthis specification, in which similar letters of reference indicatecorresponding parts in all the figures.

Figure l is a side elevation of a stove provided with my improvedfuel-economizing cone arranged in it as I propose. Fig. 2 is aperspective side elevation of my improved fuelsaving cone, and Fig. 3 isa sectional elevation of the cone.

I make a hollowfluted and perforated cone, a, of cast-iron, fire-clay,or any other approved refractory material, and arrange it in the firepotb, of a stove, as indicated by the dotted lines in Fig. 1, locating itin the center of the grate. and fastening.it by pins or bolts insortedin flanges (l, of the base, and passing through the grate in anyway. Bythe fluted form of the shell of the cone larger area is affordedfor thecooling eifect of the air for the protection of the substance of theconefrom the effect of the heat than is afforded by the plain form. Theperforations 6 allow the air rising up in the cone to flow through itinto the tire for the protection of the cone and the promotion ofcombustion. It is believed that with a cone of this kind a considerablesaving of fuel may be effected in the production of a given amount ofheat. .While I prefer'to make the cone fluted, it may be used in plainfor with good results.

What I claim as new and of my invention is- A hollow side-perforatedcone fluted on the inside and outside to increase the contactsurface forthe air which enters the inside and the fuel which bears upon theoutside, whereby the air which is fed to the inside of the fire and tothe products of combustion may be more thoroughly and more rapidlyheated, as described.

JOHN KILSIIAW.

Witnesses:

JOHN D. OBRIEN, HOMER O. ELLER.

